5 Conclusion

This Samyang is good wide angle lens , with an AF that works well in photo.

Its F2.8 aperture is not really useful , you need to be pretty damn close to your subject to have the start of a blurry background and image is a little bit soft at that aperture

F2.8 will be still ok for an A3 print, but if you want to do a large print , you better close aperture up to F11 where sharpnesss is at his best

Lightroom is doing a great job in correcting Lens distorsion/ fall off / CA

In video , even in MF , the noise of the lens will be an issue in quiet environment

the focus ring is too smooth to allow for a quick and precise manual focus

The lens is big ( as big as the Sony 16-35 F4) , and relatively costly (650 euros) considering the average performance at F2.8 , I would have preferred a F4 more compact lens like Voigtländer did with its 15mm F4.5 manual lens (700 euros – test to be published soon)

or if you want to go for the cheap way then the Samyang 14mm F2.8 ED AS IF UMC E-mount at 350 euros (= non AF version of this lens)